Piezoelectric type needle selector for jacquard weaving machines

Details Piezoelectric type needle selector for jacquard weaving machines Piezoelectric type needle selector for jacquard weaving machines

1994-03-18

1995-02-28

Falik, Andrew M.

Textiles: weaving

Warp manipulation

Shedding

139455, D03C 320

Patent

active

053928180

ABSTRACT:
A needle selector apparatus for a Jacquard machine has drop needles and thrust needles which are supported thereby and which are horizontally and vertically movable by way of control devices. A blocking element is associated with the end of each drop needle and can selectively provide support for the end of the drop needle or permit the drop needle to drop down. The adjusting element of each blocking element is a respective piezoelectric flexural transducer which is stationarily clamped at one end. Each transducer is arranged with its longitudinal direction transversely to the longitudinal direction of the associated drop needle. The free end of each transducer is movable between the support position of lying in the path of movement of the drop needle and the drop-down position of lying outside the path of movement of the drop needle, in a plane which is transverse to the longitudinal direction of the drop needle.

REFERENCES:
patent: 3871415 (1975-03-01), Wolfgang et al.
patent: 4566499 (1986-01-01), Kitagawa et al.
patent: 5027619 (1991-07-01), Saito

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